Alternating current contactor and control method thereof
An AC contactor and control algorithm technology, applied in relays, non-polar relays, electrical components, etc., can solve the problem of contactor speed without control, and achieve the effect of extending service life, reducing electrical and mechanical losses, and facilitating installation
Inactive Publication Date: 2010-08-25
SCHNEIDER ELECTRIC IND SAS
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AI Technical Summary
Problems solved by technology
Aiming at the current problem that the speed of the contactor is not controlled when it is disconnected and closed, the present invention proposes a novel solution
Method used
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The invention provides an alternating current contactor and a contact velocity control method thereof. The alternating current contactor comprises an electrical moving contact (1) and electrical static contact (2) which are opposite to each other and also comprises a movable core (3) and fixed iron core (4) which are opposite to each other, wherein the movable core (3) is mechanically connected with the electrical moving contact (1), a control coil (5) is placed in the fixed iron core (4), and a switch transistor (Q) is used to turn on / off the control coil (5), thus the fixed iron core (4) generates / eliminates electromagnetic attraction to the movable core (3) and drives the electrical moving contact and the electrical static contact to connect or disconnect. The alternating current contactor also comprises a contact velocity control device (6) which is used to perform closed loop feedback control to connect or disconnect speed of the electrical moving contact and the electrical static contact.
Description
AC contactor and its control method technical field The invention relates to an AC contactor and a control method thereof, in particular to a low-voltage AC contactor and a control method thereof which perform closed-loop feedback control on the contact speed of opening and closing of electrical contacts therein. Background technique Figure 1 shows a traditional low-voltage AC contactor in current industrial contactor products. The photo on the left shows the internal structure of the actual product of the low-voltage AC contactor, and the photo on the right is the corresponding structural diagram. As shown in FIG. 1 , a conventional low-voltage AC contactor includes a housing (not shown), contacts and iron cores accommodated in the housing. The contacts include an electrical dynamic contact 1 and an electrical static contact 2 that are oppositely arranged, and the iron core includes a movable iron core 3 and a fixed iron core 4 that are oppositely arranged. The movable ...
Claims
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Login to View More IPC IPC(8): H01H51/16H01H47/00
Inventor 王英查尔斯·布朗德尔
Owner SCHNEIDER ELECTRIC IND SAS